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  1. Parts For Sale
    I'm re-selling the turbo I bought from a fellow member from this thread: click me I bought it expecting I would need to replace the turbo on my dad's car when I was trouble shooting very low boost, but it turned out his CAT was clogged so this is back up for sale. I never even installed it...
  2. Volkswagen Passat B5 Discussion
    Sometimes when reading stuff I come across those terms, any suggestion?
  3. B5 Garage
    Hey guys, I just replaced the turbo in my 2005 AWM Passat with a remanufactured Borg Warner. I checked the vacuum system for leaks and it seems to be tight, but I'm still not getting acceleration! It was having trouble getting past 60, and got the code for Turbo Underboost. I really don't...
  4. New Member Introductions
    Hello everybody! I just bought a 2005 Passat wagon that needs a new turbo, so I thought I would try to install it myself. I bought a remanufactured Borg Warner K03. Do you guys know of any videos or how to guides with photos for installing the part? Thanks!
  5. Volkswagen Passat B5 Discussion
    Has anybody replaced their K03 with the new Borg Warner K03 that's made in China? Is the quality just as good as the original BW K03 from VW?
  6. Volkswagen Passat B5 Discussion
    Looking for some guidance have a 04 Passat engine code awm 1.8T 4motion with 105kmiles. After being chipped with stage 2 UNI about a month ago blew turbo seals in old turbo, so it was replaced with a brand new borg Warner KO3 and was instantly overboosting should Peak around 18 and will easily...
  7. Volkswagen Passat B5 Discussion
    I have a k03-029 borg warner turbo in my car and after a lot of miles I think its time for a service (due to the fact that I sometimes see a little white smoke from the exhaust which dissapears however after a quick pull) Now, although I have searched and found in many forums that the k04-015...
  8. Volkswagen Passat B5 Discussion
    Hello all, Unfortunately as I was told by my mechanic the "hotside" of the turbo has a crack on it and I have to replace the unit. The car is 1998 Volkswagen Passat 1.8T with AEB engine 185,000 miles with OEM Turbo by KKK. I found that the VW part number is 058 145 703 L. I looked around and...
  9. Volkswagen Passat B5 Discussion
    Hello all, I got the part number for my turbo 058145703n. I'm trying to get my internals rebuilt and having trouble figuring get a reliable chra. Any assistance would be awesome
  10. Parts For Sale
    Went K04 on my FSI GTI recently and have my stock k03 for sale. No shaft play, no smoke and no other issues. Has 109k miles with the last 20k miles running DM stage 2 tune. Looking for $120 shipped obo. I have pics I can email or text. I think I have notifications enabled but just in case...
  11. B5 Garage
    Hi Guys, I know I only have a few posts on here, but I would like to do a few things for the community, and furthermore myself. As you can tell from the title I would like to bring my almost completely stock car up to a k04 build. With that being said I would like to sort of use this post as a...
  12. Volkswagen Passat B5 Discussion
    Can you rebuild a k03 turbo into a k04? Is that what is considered a hybrid? If so where can you buy parts?
  13. Volkswagen Passat B5 Discussion
    I was looking on the classifieds but could not find any info. What do you think a used k03 is worth? I just upgraded my b5 and would like to sell but don't know how much Anyone have any ideas? Thanks
  14. Volkswagen Passat B5 Discussion
    Only thing I've done to the car so far is a cat-back->Cherry Bomb Extreme muffler. I plan on getting it chipped with APR stage 1 very soon (What's the cheapest diverter valve to get?). I also plan on taking the cat out and throwing in a test pipe. What other mods (Besides a turbo swap for...
  15. WTB/WTT Section
    My turbo is dying with a wheezing sound... so it's time to upgrade or replace the K03 For anyone who has upgraded their turbo, if you still have a running K03 for cheap, let me know :) It will be great if I can get a used CHIPPED ecu to go with or without it. My ECU part number is 8D0 907 558...
  16. Amateur Motorsports
    Just curious, what kind of times are you guys getting with k03 setups? I am going to head to the track in the spring once I get my Limited slip diff and new tires on and see if I can't beat my previous best of a 14.6008 @92 mph.
  17. Dyno Forum
    2003 1.8T FWD 107,438 miles 20 psi peak boost 3" CAI 2.5" turbo back with high flow cat Motoza 1+ tuned Bosch Ev14 42LB injectors FMIC
  18. WTB/WTT Section
    Looking for a usable k03 or k04 for my 1998 passat 1.8t AEB. Email me direct at [email protected] I dont get notifications if a message is sent on here. Have paypal and ready to buy for the right price including shipping to 90025 los angeles.
1-18 of 254 Results